solving a riddle; solving a mystery
Refers to the act of figuring out a puzzle, riddle, or mystery. Often used in contexts like escape rooms, detective stories, or puzzle games.
This riddle was too difficult, and no one could figure out the answer.
He is good at solving mysteries and always finds the culprit quickly.
Compound of 謎 (nazo, 'riddle, mystery') and 解き (toki, the noun form of 解く 'to solve').